Answer:
x = 7
Step-by-step explanation:
The larger outside triangle and the smaller triangle on top are similar, hence the ratios of corresponding sides are equal, that is
=
= ( cross- multiply )
5(2x + 13) = 135
10x + 65 = 135 ( subtract 65 from both sides )
10x = 70 ( divide both sides by 10 )
x = 7
Answer:
0.27
Step-by-step explanation:
Answer:
sin(72°)=x÷20ft.
sin(72°)×20ft.= 19ft 252 inches
the ladder reach 19ft 252 inches tall on the building.
Step-by-step explanation:
Answer:
y = - x + 2
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m =
with (x₁, y₁ ) = (0, 2) and (x₂, y₂ ) = (4, 0) ← 2 points on the line
m = = = -
note the line crosses the y- axis at (0, 2) ⇒ c = 2
y = - x + 2 ← equation of line